linux
Systemd Service Hardening — A Practical Checklist
NoNewPrivileges, PrivateTmp, and CapabilityBoundingSet with real production examples.
Mar 5, 2026
Tech Notes & Linux Journal
Notes on Linux, networking, and open source. Updated irregularly from somewhere in Europe.
Recent Posts
networking
BBR Congestion Control: Tuning for High-Latency Links
What each sysctl actually does and how to benchmark.
Feb 18, 2026
ops
Caddy as a Reverse Proxy — Why I Switched from Nginx
Automatic HTTPS, simpler config, HTTP/3 out of the box.
Jan 10, 2026
linux
Replacing iptables with nftables — Migration Notes
Practical migration guide for anyone still on iptables.
Dec 28, 2025
security
fail2ban + Telegram Alerts — My Setup
Getting intrusion alerts directly to Telegram with a simple webhook action.
Dec 3, 2025
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